1 /* 2 * Copyright (c) International Business Machines Corp., 2006 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 * 18 * Author: Artem Bityutskiy (Битюцкий Артём) 19 */ 20 21 #ifndef __UBI_DEBUG_H__ 22 #define __UBI_DEBUG_H__ 23 24 #ifdef CONFIG_MTD_UBI_DEBUG 25 #include <linux/random.h> 26 27 #define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__) 28 29 #define ubi_assert(expr) do { \ 30 if (unlikely(!(expr))) { \ 31 printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \ 32 __func__, __LINE__, current->pid); \ 33 ubi_dbg_dump_stack(); \ 34 } \ 35 } while (0) 36 37 #define dbg_msg(fmt, ...) \ 38 printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \ 39 current->pid, __func__, ##__VA_ARGS__) 40 41 #define ubi_dbg_dump_stack() dump_stack() 42 43 struct ubi_ec_hdr; 44 struct ubi_vid_hdr; 45 struct ubi_volume; 46 struct ubi_vtbl_record; 47 struct ubi_scan_volume; 48 struct ubi_scan_leb; 49 struct ubi_mkvol_req; 50 51 void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr); 52 void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr); 53 void ubi_dbg_dump_vol_info(const struct ubi_volume *vol); 54 void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx); 55 void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv); 56 void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type); 57 void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); 58 void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len); 59 60 #ifdef CONFIG_MTD_UBI_DEBUG_MSG 61 /* General debugging messages */ 62 #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 63 #else 64 #define dbg_gen(fmt, ...) ({}) 65 #endif 66 67 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_EBA 68 /* Messages from the eraseblock association sub-system */ 69 #define dbg_eba(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 70 #else 71 #define dbg_eba(fmt, ...) ({}) 72 #endif 73 74 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_WL 75 /* Messages from the wear-leveling sub-system */ 76 #define dbg_wl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 77 #else 78 #define dbg_wl(fmt, ...) ({}) 79 #endif 80 81 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_IO 82 /* Messages from the input/output sub-system */ 83 #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 84 #else 85 #define dbg_io(fmt, ...) ({}) 86 #endif 87 88 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD 89 /* Initialization and build messages */ 90 #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 91 #define UBI_IO_DEBUG 1 92 #else 93 #define dbg_bld(fmt, ...) ({}) 94 #define UBI_IO_DEBUG 0 95 #endif 96 97 #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID 98 int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len); 99 #else 100 #define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0 101 #endif 102 103 #ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT 104 #define DBG_DISABLE_BGT 1 105 #else 106 #define DBG_DISABLE_BGT 0 107 #endif 108 109 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS 110 /** 111 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. 112 * 113 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero. 114 */ 115 static inline int ubi_dbg_is_bitflip(void) 116 { 117 return !(random32() % 200); 118 } 119 #else 120 #define ubi_dbg_is_bitflip() 0 121 #endif 122 123 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES 124 /** 125 * ubi_dbg_is_write_failure - if it is time to emulate a write failure. 126 * 127 * Returns non-zero if a write failure should be emulated, otherwise returns 128 * zero. 129 */ 130 static inline int ubi_dbg_is_write_failure(void) 131 { 132 return !(random32() % 500); 133 } 134 #else 135 #define ubi_dbg_is_write_failure() 0 136 #endif 137 138 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES 139 /** 140 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure. 141 * 142 * Returns non-zero if an erase failure should be emulated, otherwise returns 143 * zero. 144 */ 145 static inline int ubi_dbg_is_erase_failure(void) 146 { 147 return !(random32() % 400); 148 } 149 #else 150 #define ubi_dbg_is_erase_failure() 0 151 #endif 152 153 #else 154 155 #define ubi_assert(expr) ({}) 156 #define dbg_err(fmt, ...) ({}) 157 #define dbg_msg(fmt, ...) ({}) 158 #define dbg_gen(fmt, ...) ({}) 159 #define dbg_eba(fmt, ...) ({}) 160 #define dbg_wl(fmt, ...) ({}) 161 #define dbg_io(fmt, ...) ({}) 162 #define dbg_bld(fmt, ...) ({}) 163 #define ubi_dbg_dump_stack() ({}) 164 #define ubi_dbg_dump_ec_hdr(ec_hdr) ({}) 165 #define ubi_dbg_dump_vid_hdr(vid_hdr) ({}) 166 #define ubi_dbg_dump_vol_info(vol) ({}) 167 #define ubi_dbg_dump_vtbl_record(r, idx) ({}) 168 #define ubi_dbg_dump_sv(sv) ({}) 169 #define ubi_dbg_dump_seb(seb, type) ({}) 170 #define ubi_dbg_dump_mkvol_req(req) ({}) 171 #define ubi_dbg_dump_flash(ubi, pnum, offset, len) ({}) 172 173 #define UBI_IO_DEBUG 0 174 #define DBG_DISABLE_BGT 0 175 #define ubi_dbg_is_bitflip() 0 176 #define ubi_dbg_is_write_failure() 0 177 #define ubi_dbg_is_erase_failure() 0 178 #define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0 179 180 #endif /* !CONFIG_MTD_UBI_DEBUG */ 181 #endif /* !__UBI_DEBUG_H__ */ 182